Risk

High

Date Discovered

April 10, 2012

Description

Microsoft Internet Explorer is prone to a remote code-execution vulnerability.
Attackers can exploit this issue to execute arbitrary code in the context of the currently logged-in user. Failed attacks will cause denial-of-service conditions.

Technologies Affected

Avaya Aura Conferencing 6.0 Standard

Avaya CallPilot 4.0

Avaya CallPilot 5.0

Avaya Communication Server 1000 Telephony Manager 3.0

Avaya Communication Server 1000 Telephony Manager 4.0

Avaya Meeting Exchange - Client Registration Server

Avaya Meeting Exchange - Recording Server

Avaya Meeting Exchange - Streaming Server

Avaya Meeting Exchange - Web Conferencing Server

Avaya Meeting Exchange - Webportal

Avaya Meeting Exchange 5.0

Avaya Meeting Exchange 5.0 SP1

Avaya Meeting Exchange 5.0 SP2

Avaya Meeting Exchange 5.0.0.0.52

Avaya Meeting Exchange 5.1

Avaya Meeting Exchange 5.1 SP1

Avaya Meeting Exchange 5.2

Avaya Meeting Exchange 5.2 SP1

Avaya Meeting Exchange 5.2 SP2

Avaya Messaging Application Server 5

Avaya Messaging Application Server 5.2

Microsoft Internet Explorer 6.0

Microsoft Internet Explorer 6.0 SP1

Microsoft Internet Explorer 6.0 SP2

Microsoft Internet Explorer 6.0 SP3

Microsoft Internet Explorer 7.0

Microsoft Internet Explorer 8

Recommendations

Run all software as a nonprivileged user with minimal access rights.

To reduce the impact of latent vulnerabilities, always run nonadministrative software as an unprivileged user with minimal access rights.

Deploy NIDS to monitor network traffic for signs of anomalous or suspicious activity. This includes but is not limited to requests that include NOP sleds and unexplained incoming and outgoing traffic. This may indicate exploit attempts or activity that results from successful exploits.

Do not follow links provided by unknown or untrusted sources.

Web users should be cautious about following links to sites that are provided by unfamiliar or suspicious sources.
Filtering HTML from emails may help remove a possible vector for transmitting malicious links to users.

Set web browser security to disable the execution of script code or active content.

Since a successful exploit of this issue requires malicious code to execute in web clients, consider disabling support for script code and active content within the client browser. Note that this mitigation tactic might adversely affect legitimate websites that rely on the execution of browser-based script code.

Disclaimer
The information in the advisory is believed to be accurate at the time of publishing based on currently available information. Use of the information constitutes acceptance for use in an AS IS condition. There are no warranties with regard to this information. Neither the author nor the publisher accepts any liability for any direct, indirect, or consequential loss or damage arising from use of, or reliance on, this information.

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